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Finding the Fourth Proportional to 133,067.80, 199,310.10 and 118,293.40

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Solution

The fourth proportional to 133,067.80, 199,310.10 and 118,293.40 is: 177,180.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,067.80 : 199,310.10 = 118,293.40 : x
  2. Step 2: Convert to fraction form
    133,067.80/199,310.10 = 118,293.40/x
  3. Step 3: Cross multiply
    133,067.80x = 199,310.10 × 118,293.40
  4. Step 4: Simplify right side
    133,067.80x = 23,577,069,383.34
  5. Step 5: Solve for x
    x = 23,577,069,383.34/133,067.80
  6. Step 6: Final answer
    x = 177,180.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.